Stigmidium cerinae Cl. Roux & Triebel

Data Set Maintenance: Data set compiled. Data set author(s): Cáceres M. (02-08-30). Data set not revised; not to be published after submission.

Nomenclature: Current taxonomic status: accepted. Taxonomic rank: species. Stigmidium. Genus incertae sedis: Stigmidium; of unknown placement (incertae sedis).

Taxonomic Literature: Roux C. & Triebel D., Bull. Soc. Linn. Provence 45: 451-542 [480-
481] (1994).

Biogeography: Northern hemispheric. Continent: Europe. Region(s): Middle Europe and South-eastern Europe. Country or state(s): Austria, Germany, Switzerland (incl. Liechtenstein), and Italy (incl. San Marino & The Vatican City, excl. Sicily, Sardinia).

Ecology: Biotroph; lichenicolous, endosubstratic (vegetative hyphae hialine, BCr+ bluish violet intense, 1.5-3µm wide). Host or Phorophyte Taxonomy: Caloplaca cerina var. chloroleuca.

Lichen Photobionts: Primary photobiont absent.

Thallus: Indistinct.

Medulla: Iodine reaction in Lugol's solution positive (vegetative hyphae BCr+ intense blue violet), strongly reacting.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Perithecioid, globose, within the ascocarp margin of the host or within the ascocarp disks of the host, not emerging, becoming adnate, abundant, 45-70 µm wide, 50-70 µm high, with a black surface. Wall: Not carbonized. Margin: Black, 5-10 µm wide; external filaments absent. Disk: Smooth. Exciple: Paraplectenchymatous; hyphae 3-6 µm wide, 4.5-11 µm long, not carbonized, brownish red. Periphyses: Present. Hymenium: Iodine reaction: Lugol’s negative, not hemiamyloid. Interascal Hyphae: Present, scarcely branched, not or scarcely anastomosed; cells 1.5-2.5 µm wide. Hypothecium: Pale brownish red.

Asci: Clavate, not stipitate or distinctly stipitate, 27-34 µm long, 10-11.5 µm wide; tholus not amyloid; ocular chamber present; narrow; dehiscence bitunicate (fissitunicate); exoascus not amyloid, not hemiamyloid; ascoplasm dextrinoid (endoascus BCr+ pale violet).

Ascospores: Not uniseriate, c. 8 per ascus, spores 8 per ascus, ellipsoid, obclavate, or oblong, (9)-10-11.2-12.5-(13) µm long, 3-3.4-4 µm wide, obtuse; septa present, transversally septate, 1-transversally septate; lumina of equal size or apically enlarged, constricted at the centre; wall thin, becoming pigmented, hyaline, in Lugol's Solution positive (epispore BCr+ intense blue), wall not ornamented.

Conidiomata: Present.

Conidia: Cylindrical; 2-3 µm long, .5-1 µm wide.

Secondary Metabolites: Not detected.

(report generated 04.Okt.2007)